package com.itheima.pattern.proxy.cglib_proxy;

import net.sf.cglib.proxy.Callback;
import net.sf.cglib.proxy.Enhancer;
import net.sf.cglib.proxy.MethodInterceptor;
import net.sf.cglib.proxy.MethodProxy;

import java.lang.reflect.Method;

/**
 * 代理对象工厂主要获取代理对象
 */
public class ProxyFactory implements MethodInterceptor {

    private TrainStation station=new TrainStation();

    //目标对象的父类
    public TrainStation getProxyObject(){
        //创建Enhancer对象，类似于JDK代理中的Proxy类
        Enhancer enhancer = new Enhancer();

        //设置父类的字节码对象
        enhancer.setSuperclass(TrainStation.class);

        //设置回调函数
        enhancer.setCallback(this);

        //创建代理对象
        TrainStation proxyObject = (TrainStation) enhancer.create();


        return proxyObject;
    }

    @Override
    public Object intercept(Object o, Method method, Object[] objects, MethodProxy methodProxy) throws Throwable {
        System.out.println("代售点收取费用");
        Object obj = method.invoke(station,objects);

        return obj;
    }
}
